Foam cleansing instrument

ABSTRACT

The present invention discloses a foam cleansing instrument, including a base, a liquid injection bottle, a cleansing head, and a foaming pump. The base has a bottle mounting position. The liquid injection bottle is detachably mounted in the bottle mounting position, and enables a cleanser in the liquid injection bottle to flow downward to a bottle mouth of the liquid injection bottle by its own gravity. The cleansing head is arranged on the base and configured to fit a human face to smear foam on the human face. The foaming pump is connected to the bottle mouth of the liquid injection bottle through a liquid inlet pipe and connected to the cleansing head through a liquid outlet pipe; and at least one of the liquid inlet pipe and the liquid outlet pipe is connected to a foam maker. The foam cleansing instrument is more convenient to use

TECHNICAL FIELD

The present invention relates to the technical field of beauty appliances, and in particular, to a foam cleansing instrument.

BACKGROUND

A cleansing instrument operates in many modes. An operating mode assisted by micro-bubbles is provided to improve the beauty effect, and a foam cleansing instrument is also provided.

In the prior art, a multi-foam cleansing instrument disclosed by the patent application document No. CN201810852297.2 stirs a foaming agent through rotation of a rotating shaft to generate foam, and the foam expands to a cleansing head for a user to use. However, the instrument needs to be filled with a proper amount of water and foaming agent each time the instrument is used, making it troublesome to use.

SUMMARY

To overcome the shortcomings of the prior art, an objective of the present invention is to provide a foam cleansing instrument, which is more convenient to use.

The objective of the present invention is achieved by the following technical solution:

A foam cleansing instrument, including:

a base having a bottle mounting position;

a liquid injection bottle detachably mounted in the bottle mounting position and enabling a cleanser in the liquid injection bottle to flow downward to a bottle mouth of the liquid injection bottle by its own gravity;

a cleansing head arranged on the base and configured to fit a human face to smear foam on the human face; and

a foaming pump connected to the bottle mouth of the liquid injection bottle through a liquid inlet pipe and connected to the cleansing head through a liquid outlet pipe, where at least one of the liquid inlet pipe and the liquid outlet pipe is connected to a foam maker.

Further, when the liquid injection bottle stands, the bottle mouth of the liquid injection bottle is located at a maximum horizontal height of the liquid injection bottle and at an edge of the liquid injection bottle; and when the liquid injection bottle is inversely mounted in the bottle mounting position, the bottle mouth of the liquid injection bottle is located at a minimum horizontal height of the liquid injection bottle.

Further, the foam cleansing instrument further includes a motor and a rotating shaft in driving connection with the motor, where the rotating shaft is linked with the cleansing head.

Further, the cleansing head is provided with a plurality of brush rods, the plurality of brush rods are encircled to form a multi-ring structure, brush rods located at a same ring are all at the same height, and heights of brush rods from an inner ring to an outer ring are gradually increased.

Further, the cleansing head is detachably connected to the base; the brush rods are made of a silicone material, and the cleansing head is provided with massage beads.

Further, a plurality of massage beads are provided, the cleansing head is provided with a plurality of silicone sleeves, elastic members are accommodated in the silicone sleeves, each of the massage beads is embedded in one silicone sleeve, supported by the corresponding elastic member and wrapped by the silicone sleeve, and part of the massage bead is leaked out of the silicone sleeve.

Further, the rotating shaft is axially provided with an accommodating through hole, and the liquid outlet pipe is sleeved in the accommodating through hole; the foam cleansing instrument further includes a gear transmission assembly, and the motor is in transmission connection with the rotating shaft through the gear transmission assembly.

Further, the gear transmission assembly includes a gear box fixed to the base and a transmission gear set accommodated in the gear box, and the motor is accommodated in the gear box, and is in driving connection with the rotating shaft through the transmission gear set; the gear box is internally connected to a first compensation sealing ring, and the first compensation sealing ring is arranged around a periphery of the rotating shaft; the first compensation sealing ring is composed of a first annular fitting portion, a first annular thin-walled portion, and a first annular mounting portion that are connected in sequence in a radial direction of the first compensation sealing ring; the first annular fitting portion is sleeved on an outer wall of the rotating shaft and closely fits the same; the first annular thin-walled portion is configured to avoid the first annular fitting portion, so as to enable the first annular fitting portion to deform; and the first annular mounting portion is fixed to the gear box.

Further, the foam cleansing instrument further includes an axial blocking cap, where a connecting portion of the axial blocking cap is connected to an outlet of the liquid outlet pipe; a cap body of the axial blocking cap is located at the outlet of the liquid outlet pipe, to prevent the cleanser in the liquid outlet pipe from being sprayed in an axial direction of the liquid outlet pipe; the axial blocking cap is provided with a liquid outlet groove extending in the axial direction of the liquid outlet pipe, and the liquid outlet groove communicates with the liquid outlet pipe and an external environment, so that the cleanser in the liquid outlet pipe is capable of flowing out in a radial direction of the liquid outlet pipe.

Further, the foam maker includes a foaming pipe and at least two foam meshes accommodated in the foaming pipe, and the two foam meshes are spaced to form a foaming cavity; a supporting spring is accommodated in the foaming cavity, and two ends of the supporting spring each abut against one of the foam meshes.

Compared with the prior art, the present invention has the following beneficial effects:

A liquid inlet pipe only needs to be connected to a bottle mouth of a liquid injection bottle, that is, there is no need to arrange a straw exposed in a bottle mounting position. In this way, when the liquid injection bottle needs to be replaced with a new liquid injection bottle (that is, the liquid injection bottle is a disposable bottle), because no straw needs to be arranged on a base, a situation is avoided that unnecessary sanitation and hygiene operation is caused by cleanser adhesion to the straw, thereby improving convenience. In addition, each time a liquid injection bottle is replaced with a new liquid injection bottle, the operation is only to remove the old liquid injection bottle from a bottle mounting position, and then mount the new liquid injection bottle in the bottle mounting position, thereby making the operation of replenishing the cleanser especially convenient.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural diagram of a foam cleansing instrument according to the present invention;

FIG. 2 is a partial enlarged view of a position A in FIG. 1 ;

FIG. 3 is a schematic structural diagram of an axial blocking cap shown in FIG. 1 ;

FIG. 4 is a schematic structural diagram of a gear transmission assembly shown in FIG. 1 ;

FIG. 5 is a sectional view of FIG. 4 ;

FIG. 6 is an exploded view of a foam maker shown in FIG. 1 ;

FIG. 7 is a sectional view of the foam maker shown in FIG. 1 ;

FIG. 8 is a sectional view of a cleansing head shown in FIG. 1 ;

FIG. 9 is a schematic structural diagram of the cleansing head shown in FIG. 1 ; and

FIG. 10 is an exploded view of FIG. 9 .

In the drawings: 10. Foam cleansing instrument; 101. Base; 1011. Bottle mounting position; 1012. Cover; 1013. Handle; 1014. Left fork; 1015. Right fork; 102. Liquid injection bottle; 103. Cleansing head; 1031. Silicone brush holder; 10311. Positioning post; 1032. Silicone brush head; 10321. Brush rod; 10322. Silicone sleeve; 103221. Opening; 103222. Body; 1033. Massage bead; 1034. Elastic member; 104. Foaming pump; 105. Liquid inlet pipe; 106. Liquid outlet pipe; 1061. Hard pipe; 1062. Hose; 107. Foam maker; 1071. Foaming pipe; 10711. First pipe section; 107111. Liquid inlet channel; 107112. Flange; 10712. Second pipe section; 107121. Liquid outlet channel; 107122. Ring groove; 10713. Cone frustum connecting portion; 1072. Foam mesh; 1073. Foaming cavity; 1074. Supporting spring; 108. Motor; 109. Rotating shaft; 1091. Accommodating through hole; 110. Gear transmission assembly; 111. Gear box; 1111. Annular limiting groove; 112. Transmission gear set; 1121. First gear; 1122. Second gear; 1123. Third gear; 1124. Fourth gear; 1125. Fifth gear; 113. First compensation sealing ring; 1131. First annular fitting portion; 1132. First annular thin-walled portion; 1133. First annular mounting portion; 114. Axial blocking cap; 1141. Cap body; 1142. Liquid outlet groove; 115. Second compensation sealing ring; 1151. Second annular fitting portion; 1152. Second annular thin-walled portion; and 1153. Second annular mounting portion.

DESCRIPTION OF EMBODIMENTS

The present invention will be further described with reference to the drawings and specific implementations. It should be noted that the embodiments or technical features described below can be arbitrarily combined to form new embodiments in case of no conflict.

It should be noted that when an element is “fixed” to another element, the element may be directly on the another element, or an intermediate element may exist. When an element is considered as being “connected” to another element, the element may be directly connected to the another element or an intermediate element may exist. “Vertical”, “horizontal”, “left”, “right”, and similar expressions used herein are only for the purpose of illustration and do not represent an only implementation.

Unless otherwise defined, all technical terms and scientific terms used herein have the same meanings as those commonly understood by a person skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term “and/or” includes any and all combinations of one or more related listed items.

FIG. 1 shows a foam cleansing instrument 10 according to a preferred embodiment of the present invention.

The foam cleansing instrument 10 mainly includes a base 101, a liquid injection bottle 102, a cleansing head 103, and a foaming pump 104.

The base 101 has a bottle mounting position 1011, to smoothly support the liquid injection bottle 102 through the bottle mounting position 1011.

The liquid injection bottle 102 is detachably mounted in the bottle mounting position 1011 and enables a cleanser in the liquid injection bottle 102 to flow downward to a bottle mouth of the liquid injection bottle 102 by its own gravity. In this way, the cleanser in the liquid injection bottle 102 can be sucked without connecting a straw in the liquid injection bottle 102, that is, the cleanser in the liquid injection bottle 102 flows out to the bottle mouth and then is pumped.

The cleansing head 103 is arranged on the base 101 and configured to fit a human face to smear foam on the human face.

The foaming pump 104 is connected to the bottle mouth of the liquid injection bottle 102 through a liquid inlet pipe 105 and connected to the cleansing head 103 through a liquid outlet pipe 106; and at least one of the liquid inlet pipe 105 and the liquid outlet pipe 106 is connected to a foam maker 107, so that the cleanser on the cleansing head 103 is in a foaming state by foaming the cleanser by the foam maker 107, so as to improve the experience effect. It should be noted that, in this case, the liquid inlet pipe 105 only needs to be connected to the bottle mouth of the liquid injection bottle 102, that is, there is no need to arrange the straw exposed in the bottle mounting position 1011. In this way, when the liquid injection bottle 102 needs to be replaced with a new liquid injection bottle 102 (that is, the liquid injection bottle 102 is a disposable bottle), because no straw needs to be arranged on the base 101, a situation is avoided that unnecessary sanitation and hygiene operation is caused by cleanser adhesion to the straw, thereby improving convenience. In addition, each time the liquid injection bottle is replaced with a new liquid injection bottle 102, the operation is only to remove the old liquid injection bottle 102 from the bottle mounting position 1011, and then mount the new liquid injection bottle 102 in the bottle mounting position 1011, thereby making the operation of replenishing the cleanser especially convenient.

Referring to FIG. 1 , preferably, when the liquid injection bottle 102 stands, the bottle mouth of the liquid injection bottle 102 is located at a maximum horizontal height of the liquid injection bottle 102 and at an edge of the liquid injection bottle 102. When the liquid injection bottle 102 is inversely mounted in the bottle mounting position 1011, the bottle mouth of the liquid injection bottle 102 is located at a minimum horizontal height of the liquid injection bottle 102. In this way, when the liquid injection bottle 102 is inverted, all the cleanser therein rushes to the bottle mouth, so that all the cleanser in the liquid injection bottle 102 can flow out.

Referring to FIG. 1 , preferably, the foam cleansing instrument 10 further include a motor 108, a rotating shaft 109 in driving connection with the motor 108, a storage battery accommodated in the base 101, and a wireless charging seat detachably inserted in the base 101. The rotating shaft 109 is linked with the cleansing head 103. The motor 108 and the foaming pump 104 are connected to the storage battery. In this way, the motor 108 drives the rotating shaft 109 to rotate, and the rotating shaft 109 is linked with the cleansing head 103 to rotate, thereby improving smearing efficiency. It may be understood that, as an alternative to rotation, a vibration type of existing cleansing instruments is provided.

Referring to FIG. 2 and FIG. 8 , preferably, the cleansing head 103 is provided with a plurality of brush rods 10321, the plurality of brush rods 10321 are encircled to form a multi-ring structure, brush rods 10321 located at a same ring are all at the same height, and heights of brush rods 10321 from an inner ring to an outer ring are gradually increased. In this way, the cleansing head 103 has a concave structure, so that when the cleansing head 103 rotates, the foamed cleanser moves in a radial direction of the cleansing head 103 under the action of a centrifugal force. Because the heights of the brush rods 10321 at the outer ring are higher than those of the brush rods 10321 at the inner ring, the foamed cleanser can be intercepted, thereby preventing the cleanser from being separated from the cleansing head 103. In addition, based on the rotation of the cleansing head 103, the cleanser on the cleansing head 103 can be distributed more evenly to improve the experience effect.

Referring to FIG. 8 , preferably, for ease of cleaning, the cleansing head 103 is detachably connected to the base 101, for example, though clamping or magnetic connection. The brush rods 10321 are made of a silicone material, and the cleansing head 103 is provided with massage beads 1033. In this way, the brush rods 10321 made of the silicone material touch the human face relatively gently, so that the massage beads 1033 can also touch the face for massage while the cleanser is smeared.

Referring to FIG. 8 , preferably, a plurality of massage beads 1033 are provided, the cleansing head 103 is provided with a plurality of silicone sleeves 10322, elastic members 1034 are accommodated in the silicone sleeves 10322, each of the massage beads 1033 is embedded in one silicone sleeve 10322, supported by the corresponding elastic member 1034 and wrapped by the silicone sleeve 10322, and part of the massage bead 1033 is leaked out of the silicone sleeve 10322. In this way, the massage beads 1033 have an elastic floating range, so that the massage beads 1033 can be prevented from hurting the human face through pressing. In a preferred layout, a plurality of massage beads 1033 are distributed in a circumferential array around an axis of the rotating shaft 109, so that the massage effect is relatively balanced. The elastic member 1034 may be a rubber block, a compression spring, or the like. More specifically, referring to FIG. 8 to FIG. 10 , the cleansing head 103 includes a silicone brush holder 1031 and a silicone brush head 1032, where the silicone brush holder 1031 is provided with a plurality of positioning posts 10311, and the silicone brush head 1032 is detachably connected to the silicone brush holder 1031. The plurality of positioning posts 10311 are sleeved with the plurality of silicone sleeves 10322 respectively in a one-to-one correspondence, and the elastic member 1034 in each of the silicone sleeves 10322 is sleeved outside the corresponding positioning post 10311. In this way, the cleansing head 103 is divided into two main components, namely, the silicone brush holder 1031 and the silicone brush head 1032, so that the massage beads 1033 and the elastic members 1034 can be conveniently installed in the cleansing head 103. In addition, the elastic members 1034 are positioned by the positioning posts 10311, so that the elastic members 1034 can be prevented from being deviated. Further, referring to FIG. 8 , an aperture of an opening 103221 of each of the silicone sleeves 10322 is smaller than that of a body 103222 of the silicone sleeve 10322. In this way, the opening 103221 of the silicone sleeve 10322 can prevent the massage beads 1033 from popping out of the silicone sleeve 10322.

Referring to FIG. 2 , preferably, the rotating shaft 109 is axially provided with an accommodating through hole 1091, and the liquid outlet pipe 106 is sleeved in the accommodating through hole 1091; the foam cleansing instrument 10 further includes a gear transmission assembly 110, and the motor 108 is in transmission connection with the rotating shaft 109 through the gear transmission assembly 110. In this way, on the basis that the motor 108 drives the cleansing head 103 to rotate, the liquid outlet pipe 106 and the rotating shaft 109 are coaxially arranged, thereby improving compactness of the cleansing instrument.

Preferably, referring to FIG. 4 (for ease of understanding, referring to FIG. 2 and FIG. 5 when necessary), the gear transmission assembly 110 includes a gear box 111 fixed to the base 101 and a transmission gear set 112 accommodated in the gear box 111, and the motor 108 is accommodated in the gear box 111, and is in driving connection with the rotating shaft 109 through the transmission gear set 112; the gear box 111 is internally connected to a first compensation sealing ring 113, and the first compensation sealing ring 113 is arranged around a periphery of the rotating shaft 109; the first compensation sealing ring 113 is composed of a first annular fitting portion 1131, a first annular thin-walled portion 1132, and a first annular mounting portion 1133 that are connected in sequence in a radial direction of the first compensation sealing ring 113; the first annular fitting portion 1131 is sleeved on an outer wall of the rotating shaft 109 and closely fits the same; the first annular thin-walled portion 1132 is configured to avoid the first annular fitting portion 1131, so as to enable the first annular fitting portion 1131 to deform; and the first annular mounting portion 1133 is fixed to the gear box 111. In this way, when the rotating shaft 109 rotates at a high speed to swing, due to deformation of the first annular thin-walled portion 1132, the first annular fitting portion 1131 can be close to an outer wall of the rotating shaft 109, thereby ensuring the sealing effect. In this way, even if the foamed cleanser flows in from the cleansing head 103 along the outer wall of the rotating shaft 109, the cleanser will be intercepted by the first annular fitting portion 1131, thereby ensuring that components in the gear box 111 are not eroded.

Further, referring to FIG. 4 and FIG. 5 , the transmission gear set 112 includes a first gear 1121 and a second gear 1122 integrally formed and coaxial with the first gear 1121, and the second gear 1122 is in transmission connection with the rotating shaft 109. The transmission gear set 112 further includes a third gear 1123 meshing with the second gear 1122, a fourth gear 1124 integrally formed and coaxial with the third gear 1123, and a fifth gear 1125 meshing with the fourth gear 1124 and integrally formed with the rotating shaft 109. In this way, through the coaxial arrangement of the two gears, the compactness of the transmission gear set 112 is greatly improved, so that a rotating speed of the cleansing head 103 can be greatly reduced, to control the rotating speed of the cleansing head 103 within a reasonable range.

Preferably, referring to FIG. 2 and FIG. 5 , the gear box 111 is mounted in the base 101, and a cover 1012 of the base 101 abuts against the first compensation sealing ring 113 and axially limits the first compensation sealing ring 113. In this way, the cover 1012 is radially sealed by the first compensation sealing ring 113, so that the base 101 has a waterproof function.

Referring to FIG. 2 , preferably, the liquid outlet pipe 106 includes a hard pipe 1061 and a hose 1062. The hard pipe 1061 is sleeved in the accommodating through hole 1091, and the hose 1062 communicates with the hard pipe 1061. The hard pipe 1061 has an L-shaped structure. In this way, the hard pipe 1061 can be sleeved in the rotating shaft 109 and kept in a static state, while the hose 1062 can be connected to the foaming pump 104.

Referring to FIG. 2 , in order to smoothly limit the rotating shaft 109, the gear box 111 is provided with an annular limit groove 1111, and the rotating shaft 109 is sleeved in the annular limit groove 1111. In this case, to perform waterproof sealing on the rotating shaft 109, preferably, the gear box 111 is internally provided with a second compensation sealing ring 115, and the second compensation sealing ring 115 is located below the first compensation sealing ring 113, sleeved on a periphery of the annular limiting groove 1111 and arranged around the periphery of the rotating shaft 109. Specifically, the second compensation sealing ring 115 is composed of a second annular fitting portion 1151, a second annular thin-walled portion 1152, and a second annular mounting portion 1153 that are connected in sequence in a radial direction of the second compensation sealing ring 115. The second annular fitting portion 1151 is sleeved on the outer wall of the rotating shaft 109 and closely fits the same; the second annular thin-walled portion 1152 is configured to avoid the second annular fitting portion 1151 so that the second annular fitting portion 1151 can be deformed; and the second annular mounting portion is fixed to the gear box 111. Similarly, when the rotating shaft 109 rotates at a high speed to swing, due to deformation of the second annular thin-walled portion 1152, the second annular fitting portion 1151 can be close to the outer wall of the rotating shaft 109, thereby ensuring the sealing effect. In this way, even if the foamed cleanser flows in from the cleansing head 103 along the accommodating through hole 1091, it will be intercepted by the first annular fitting portion 1131, thus ensuring that the components in the gear box 111 are not eroded.

Referring to FIG. 5 , to prevent the cleanser from being directly sprayed, preferably, the foam cleansing instrument 10 further includes an axial blocking cap 114, where a connecting portion of the axial blocking cap 114 is connected to an outlet of the liquid outlet pipe 106; a cap body 1141 of the axial blocking cap 114 is located at the outlet of the liquid outlet pipe 106, to prevent the cleanser in the liquid outlet pipe 106 from being sprayed in an axial direction of the liquid outlet pipe 106; the axial blocking cap 114 is provided with a liquid outlet groove 1142 extending in the axial direction of the liquid outlet pipe 106, and the liquid outlet groove 1142 communicates with the liquid outlet pipe 106 and an external environment, so that the cleanser in the liquid outlet pipe 106 is capable of flowing out in a radial direction of the liquid outlet pipe 106. In this way, with the rotation of the cleansing head 103, the cleanser is distributed more evenly in the radial direction.

Referring to FIG. 6 and FIG. 7 , preferably, the foam maker 107 includes a foaming pipe 1071 and at least two foam meshes 1072 accommodated in the foaming pipe 1071, and the two foam meshes 1072 are spaced to form a foaming cavity 1073. It may be understood that each of the foam meshes 1072 may be a porous plate, and the cleanser can be foamed by distributing the high-speed cleanser through the foam meshes 1072. A supporting spring 1074 is accommodated in the foaming cavity 1073, and two ends of the supporting spring 1074 each abut against one of the foam meshes 1072. In this way, the cleanser can be fully foamed by the foaming of the two foam meshes 1072.

Preferably, referring to FIG. 6 and FIG. 7 , the foaming pipe 1071 includes a first pipe section 10711 and a second pipe section 10712, where the first pipe section 10711 is provided with a liquid inlet channel 107111, the foaming cavity 1073 is provided in the second pipe section 10712, and the second pipe section 10712 is provided with a liquid outlet channel 107121; the liquid inlet channel 107111, the foaming cavity 1073, and the liquid outlet channel 107121 communicate with each other in sequence; and an inn diameter of the liquid inlet channel 107111 and an inner diameter of the liquid outlet channel 107121 are both small than that of the foaming cavity 1073. In this way, when the cleanser flows into the foaming cavity 1073 from the liquid inlet channel 107111, according to a flow continuity equation, the flow rate of the cleanser decreases due to the expansion of a cross section, so that the cleanser can be fully foamed in the foaming cavity 1073. After the foaming is completed, the cleanser flows out to the liquid outlet channel 107121, and therefore the flow rate restores to an initial value based on the reduction of the cross section. Therefore, to restore the speed to the initial value, preferably, the inner diameter of the liquid inlet channel 107111 and the inner diameter of the liquid outlet channel 107121 are equal.

Referring to FIG. 6 and FIG. 7 , one of the first pipe section 10711 and the second pipe section 10712 is provided with a ring groove 107122, the other is provided with a flange 107112, and the flange 107112 is clamped in the ring groove 107122. In this way, hermetic clamping can be implemented. To facilitate the connection of the foaming pipe 1071 into the pipe section of the liquid inlet pipe 105 and prevent the foaming pipe from falling off easily, two ends of the foaming pipe 1071 are provided with cone frustum connecting portions 10713, and a diameter of each of the cone frustum connecting portions 10713 gradually increases from outside to inside in the axial direction of the foaming pipe 1071. The foam meshes 1072 are made of a metal material. Preferably, one of the foam meshes 1072 is axially limited by a cavity wall of the foaming cavity 1073, and the other foam mesh 1072 is axially limited by the first pipe section 10711. In this way, the foam meshes 1072 can be stably fixed.

Referring to FIG. 1 , the base 101 includes a handle 1013, a left fork 1014 connected to the top of the handle 1013 and extending obliquely upward, and a right fork 1015 connected to the top of the handle 1013 and extending obliquely upward, so that an outer contour of the base 101 has a Y-shaped structure. The bottle mounting position 1011 is located at the left fork 1014, the right fork 1015 is provided with a cleansing head 103, and the cleansing head 103 is provided with brush rods 10321. In this way, when the handle 1013 is grasped by a human hand, the liquid injection bottle 102 is placed obliquely with respect to the horizontal plane, so that the liquid injection bottle has a better stress state and does not fall off easily. In this case, it is convenient for a user to use a device.

The foregoing implementations are only preferred implementations of the present invention, and cannot be used to limit the protection scope of the present invention. Any immaterial changes and replacements made by a person skilled in the art on the basis of the present invention fall within the protection scope of the present invention. 

What is claimed is:
 1. A foam cleansing instrument (10), comprising: a base (101) having a bottle mounting position (1011); a liquid injection bottle (102) detachably mounted in the bottle mounting position (1011) and enabling a cleanser in the liquid injection bottle (102) to flow downward to a bottle mouth of the liquid injection bottle (102) by its own gravity; a cleansing head (103) arranged on the base (101) and configured to fit a human face to smear foam on the human face; and a foaming pump (104) connected to the bottle mouth of the liquid injection bottle (102) through a liquid inlet pipe (105) and connected to the cleansing head (103) through a liquid outlet pipe (106), wherein at least one of the liquid inlet pipe (105) and the liquid outlet pipe (106) is connected to a foam maker (107).
 2. The foam cleansing instrument (10) according to claim 1, wherein when the liquid injection bottle (102) stands, the bottle mouth of the liquid injection bottle (102) is located at a maximum horizontal height of the liquid injection bottle (102) and at an edge of the liquid injection bottle (102); and when the liquid injection bottle (102) is inversely mounted in the bottle mounting position (1011), the bottle mouth of the liquid injection bottle (102) is located at a minimum horizontal height of the liquid injection bottle (102).
 3. The foam cleansing instrument (10) according to claim 1, further comprising a motor (108) and a rotating shaft (109) in driving connection with the motor (108), wherein the rotating shaft (109) is linked with the cleansing head (103).
 4. The foam cleansing instrument (10) according to claim 3, wherein the cleansing head (103) is provided with a plurality of brush rods (10321), the plurality of brush rods (10321) are encircled to form a multi-ring structure, brush rods (10321) located at a same ring are all at the same height, and heights of brush rods (10321) from an inner ring to an outer ring are gradually increased.
 5. The foam cleansing instrument (10) according to claim 4, wherein the cleansing head (103) is detachably connected to the base (101); the brush rods (10321) are made of a silicone material, and the cleansing head (103) is provided with massage beads (1033).
 6. The foam cleansing instrument (10) according to claim 5, wherein a plurality of massage beads (1033) are provided, the cleansing head (103) is provided with a plurality of silicone sleeves (10322), elastic members (1034) are accommodated in the silicone sleeves (10322), each of the massage beads (1033) is embedded in one silicone sleeve (10322), supported by the corresponding elastic member (1034) and wrapped by the silicone sleeve (10322), and part of the massage bead (1033) is leaked out of the silicone sleeve (10322).
 7. The foam cleansing instrument (10) according to claim 3, wherein the rotating shaft (109) is axially provided with an accommodating through hole (1091), and the liquid outlet pipe (106) is sleeved in the accommodating through hole (1091); the foam cleansing instrument (10) further comprises a gear transmission assembly (110), and the motor (108) is in transmission connection with the rotating shaft (109) through the gear transmission assembly (110).
 8. The foam cleansing instrument (10) according to claim 7, wherein the gear transmission assembly (110) comprises a gear box (111) fixed to the base (101) and a transmission gear set (112) accommodated in the gear box (111), and the motor (108) is accommodated in the gear box (111), and is in driving connection with the rotating shaft (109) through the transmission gear set (112); the gear box (111) is internally provided with a first compensation sealing ring (113), and the first compensation sealing ring (113) is arranged around a periphery of the rotating shaft (109); the first compensation sealing ring (113) is composed of a first annular fitting portion (1131), a first annular thin-walled portion (1132), and a first annular mounting portion (1133) that are connected in sequence in a radial direction of the first compensation sealing ring (113); the first annular fitting portion (1131) is sleeved on an outer wall of the rotating shaft (109) and closely fits the same; the first annular thin-walled portion (1132) is configured to avoid the first annular fitting portion (1131), so as to enable the first annular fitting portion (1131) to deform; and the first annular mounting portion (1133) is fixed to the gear box (111).
 9. The foam cleansing instrument (10) according to claim 1, further comprising an axial blocking cap (114), wherein a connecting portion of the axial blocking cap (114) is connected to an outlet of the liquid outlet pipe (106); a cap body (1141) of the axial blocking cap (114) is located at the outlet of the liquid outlet pipe (106), to prevent the cleanser in the liquid outlet pipe (106) from being sprayed in an axial direction of the liquid outlet pipe (106); the axial blocking cap (114) is provided with a liquid outlet groove (1142) extending in the axial direction of the liquid outlet pipe (106), and the liquid outlet groove (1142) communicates with the liquid outlet pipe (106) and an external environment, so that the cleanser in the liquid outlet pipe (106) is capable of flowing out in a radial direction of the liquid outlet pipe (106).
 10. The foam cleansing instrument (10) according to claim 1, wherein the foam maker (107) comprises a foaming pipe (1071) and at least two foam meshes (1072) accommodated in the foaming pipe (1071), and the two foam meshes (1072) are spaced to form a foaming cavity (1073); a supporting spring (1074) is accommodated in the foaming cavity (1073), and two ends of the supporting spring (1074) each abut against one of the foam meshes (1072). 